کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1548351 997735 2012 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Novel flexible broadband microwave absorptive fabrics coated with graphite nanosheets/polyurethane nanocomposites
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Novel flexible broadband microwave absorptive fabrics coated with graphite nanosheets/polyurethane nanocomposites
چکیده انگلیسی

Graphite nanosheets (GNS) were prepared by surfactant assisted ultrasonication from expanded graphite (EG) and followed by coating onto vinylon fabrics with water-borne polyurethane (WPU). The morphology of GNS and GNS/polyurethane (PU) coatings was characterized by field emission scanning electron microscope (FESEM), and the structure of GNS was studied by fourier transform infrared (FTIR) spectroscopy. Electromagnetic (EM) parameters indicated that GNS is a kind of dielectric loss material, in which little magnetic loss is found. Reflection loss (RL) results showed that both GNS content and coated thickness had great influences on the microwave absorption. For the fabric coated with GNS/PU nanocomposites (30/100 by weight, wet thickness of 0.39 mm for dry areal density in 130 g/m2), RL values exceeding −5 dB could be obtained in the frequency range of 10.7–18 GHz, while −10 dB in 12.7–18 GHz, and a minimum value of −28 dB at 15.2 GHz. These GNS/PU coated fabrics are light and flexible with much thin and low-cost coated layer, and showed great potential in radar camouflaging and electromagnetic interference application.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Progress in Natural Science: Materials International - Volume 22, Issue 4, August 2012, Pages 288–294
نویسندگان
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